1. The animals having back-bones, are known as vertebrates e.g., humans, dog, cat, fish,birds, horse, lizard etc.

    The animals having back-bones, are known as vertebrates e.g., humans, dog, cat, fish,birds, horse, lizard etc.

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  2. Animals which do not have a back-bone are known as invertebrates e.g., cockroach, earthworm etc.

    Animals which do not have a back-bone are known as invertebrates e.g., cockroach, earthworm etc.

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